sync from my branch rev 983 and 993:

- module api change, if module fails to load it can give back an useful error message
- give a message when client doesnt supply a password when connecting
- some minor cleanup


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@803 726aef4b-f618-498e-8847-2d620e286838

modules/watch.cpp

@@ -155,10 +155,6 @@ public:
 		m_Buffer.SetLineCount(500);
 	}
 
-	virtual bool OnLoad(const CString& sArgs) {
-		return true;
-	}
-
 	virtual ~CWatcherMod() {
 	}